TY - JOUR AU - Don Redmond TI - A remark on a paper by A. Grytczuk. JO - Elemente der Mathematik PY - 1983 SP - 17 EP - 20 VL - 38 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ELMA_1983__38_141304/ ID - ELMA_1983__38_141304 ER -